xref: /freebsd/sys/contrib/dev/acpica/common/acfileio.c (revision 6966ac055c3b7a39266fb982493330df7a097997)
1 /******************************************************************************
2  *
3  * Module Name: acfileio - Get ACPI tables from file
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2020, Intel Corp.
12  * All rights reserved.
13  *
14  * 2. License
15  *
16  * 2.1. This is your license from Intel Corp. under its intellectual property
17  * rights. You may have additional license terms from the party that provided
18  * you this software, covering your right to use that party's intellectual
19  * property rights.
20  *
21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22  * copy of the source code appearing in this file ("Covered Code") an
23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24  * base code distributed originally by Intel ("Original Intel Code") to copy,
25  * make derivatives, distribute, use and display any portion of the Covered
26  * Code in any form, with the right to sublicense such rights; and
27  *
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29  * license (with the right to sublicense), under only those claims of Intel
30  * patents that are infringed by the Original Intel Code, to make, use, sell,
31  * offer to sell, and import the Covered Code and derivative works thereof
32  * solely to the minimum extent necessary to exercise the above copyright
33  * license, and in no event shall the patent license extend to any additions
34  * to or modifications of the Original Intel Code. No other license or right
35  * is granted directly or by implication, estoppel or otherwise;
36  *
37  * The above copyright and patent license is granted only if the following
38  * conditions are met:
39  *
40  * 3. Conditions
41  *
42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43  * Redistribution of source code of any substantial portion of the Covered
44  * Code or modification with rights to further distribute source must include
45  * the above Copyright Notice, the above License, this list of Conditions,
46  * and the following Disclaimer and Export Compliance provision. In addition,
47  * Licensee must cause all Covered Code to which Licensee contributes to
48  * contain a file documenting the changes Licensee made to create that Covered
49  * Code and the date of any change. Licensee must include in that file the
50  * documentation of any changes made by any predecessor Licensee. Licensee
51  * must include a prominent statement that the modification is derived,
52  * directly or indirectly, from Original Intel Code.
53  *
54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55  * Redistribution of source code of any substantial portion of the Covered
56  * Code or modification without rights to further distribute source must
57  * include the following Disclaimer and Export Compliance provision in the
58  * documentation and/or other materials provided with distribution. In
59  * addition, Licensee may not authorize further sublicense of source of any
60  * portion of the Covered Code, and must include terms to the effect that the
61  * license from Licensee to its licensee is limited to the intellectual
62  * property embodied in the software Licensee provides to its licensee, and
63  * not to intellectual property embodied in modifications its licensee may
64  * make.
65  *
66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67  * substantial portion of the Covered Code or modification must reproduce the
68  * above Copyright Notice, and the following Disclaimer and Export Compliance
69  * provision in the documentation and/or other materials provided with the
70  * distribution.
71  *
72  * 3.4. Intel retains all right, title, and interest in and to the Original
73  * Intel Code.
74  *
75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76  * Intel shall be used in advertising or otherwise to promote the sale, use or
77  * other dealings in products derived from or relating to the Covered Code
78  * without prior written authorization from Intel.
79  *
80  * 4. Disclaimer and Export Compliance
81  *
82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88  * PARTICULAR PURPOSE.
89  *
90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97  * LIMITED REMEDY.
98  *
99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100  * software or system incorporating such software without first obtaining any
101  * required license or other approval from the U. S. Department of Commerce or
102  * any other agency or department of the United States Government. In the
103  * event Licensee exports any such software from the United States or
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108  * any of its subsidiaries will export/re-export any technical data, process,
109  * software, or service, directly or indirectly, to any country for which the
110  * United States government or any agency thereof requires an export license,
111  * other governmental approval, or letter of assurance, without first obtaining
112  * such license, approval or letter.
113  *
114  *****************************************************************************
115  *
116  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include <contrib/dev/acpica/include/acpi.h>
153 #include <contrib/dev/acpica/include/accommon.h>
154 #include <contrib/dev/acpica/include/actables.h>
155 #include <contrib/dev/acpica/include/acutils.h>
156 #include <contrib/dev/acpica/include/acapps.h>
157 
158 #define _COMPONENT          ACPI_UTILITIES
159         ACPI_MODULE_NAME    ("acfileio")
160 
161 
162 /* Local prototypes */
163 
164 static ACPI_STATUS
165 AcGetOneTableFromFile (
166     char                    *Filename,
167     FILE                    *File,
168     UINT8                   GetOnlyAmlTables,
169     ACPI_TABLE_HEADER       **Table);
170 
171 static ACPI_STATUS
172 AcCheckTextModeCorruption (
173     ACPI_TABLE_HEADER       *Table);
174 
175 
176 /*******************************************************************************
177  *
178  * FUNCTION:    AcDeleteTableList
179  *
180  * PARAMETERS:  ListHead            - List to delete
181  *
182  * RETURN:      Status
183  *
184  * DESCRIPTION: Delete a list of tables. This is useful for removing memory
185  *              allocated by AcGetAllTablesFromFile
186  *
187  ******************************************************************************/
188 
189 void
190 AcDeleteTableList (
191     ACPI_NEW_TABLE_DESC     *ListHead)
192 {
193     ACPI_NEW_TABLE_DESC     *Current = ListHead;
194     ACPI_NEW_TABLE_DESC     *Previous = Current;
195 
196 
197     while (Current)
198     {
199         Current = Current->Next;
200         AcpiOsFree (Previous);
201         Previous = Current;
202     }
203 }
204 
205 
206 /*******************************************************************************
207  *
208  * FUNCTION:    AcGetAllTablesFromFile
209  *
210  * PARAMETERS:  Filename            - Table filename
211  *              GetOnlyAmlTables    - TRUE if the tables must be AML tables
212  *              ReturnListHead      - Where table list is returned
213  *
214  * RETURN:      Status
215  *
216  * DESCRIPTION: Get all ACPI tables from within a single file.
217  *
218  ******************************************************************************/
219 
220 ACPI_STATUS
221 AcGetAllTablesFromFile (
222     char                    *Filename,
223     UINT8                   GetOnlyAmlTables,
224     ACPI_NEW_TABLE_DESC     **ReturnListHead)
225 {
226     ACPI_NEW_TABLE_DESC     *ListHead = NULL;
227     ACPI_NEW_TABLE_DESC     *ListTail = NULL;
228     ACPI_NEW_TABLE_DESC     *TableDesc;
229     FILE                    *File;
230     ACPI_TABLE_HEADER       *Table = NULL;
231     UINT32                  FileSize;
232     ACPI_STATUS             Status = AE_OK;
233 
234 
235     File = fopen (Filename, "rb");
236     if (!File)
237     {
238         fprintf (stderr, "Could not open input file: %s\n", Filename);
239         if (errno == ENOENT)
240         {
241             return (AE_NOT_EXIST);
242         }
243 
244         return (AE_ERROR);
245     }
246 
247     /* Get the file size */
248 
249     FileSize = CmGetFileSize (File);
250     if (FileSize == ACPI_UINT32_MAX)
251     {
252         Status = AE_ERROR;
253         goto Exit;
254     }
255 
256     fprintf (stderr,
257         "Input file %s, Length 0x%X (%u) bytes\n",
258         Filename, FileSize, FileSize);
259 
260     /* We must have at least one ACPI table header */
261 
262     if (FileSize < sizeof (ACPI_TABLE_HEADER))
263     {
264         Status = AE_BAD_HEADER;
265         goto Exit;
266     }
267 
268     /* Check for an non-binary file */
269 
270     if (!AcIsFileBinary (File))
271     {
272         fprintf (stderr,
273             "    %s: File does not appear to contain a valid AML table\n",
274             Filename);
275         Status = AE_TYPE;
276         goto Exit;
277     }
278 
279     /* Read all tables within the file */
280 
281     while (ACPI_SUCCESS (Status))
282     {
283         /* Get one entire ACPI table */
284 
285         Status = AcGetOneTableFromFile (
286             Filename, File, GetOnlyAmlTables, &Table);
287 
288         if (Status == AE_CTRL_TERMINATE)
289         {
290             Status = AE_OK;
291             break;
292         }
293         else if (Status == AE_TYPE)
294         {
295             Status = AE_OK;
296             goto Exit;
297         }
298         else if (ACPI_FAILURE (Status))
299         {
300             goto Exit;
301         }
302 
303         /* Print table header for iASL/disassembler only */
304 
305 #ifdef ACPI_ASL_COMPILER
306 
307         AcpiTbPrintTableHeader (0, Table);
308 #endif
309 
310         /* Allocate and link a table descriptor */
311 
312         TableDesc = AcpiOsAllocate (sizeof (ACPI_NEW_TABLE_DESC));
313         if (!TableDesc)
314         {
315             AcpiOsFree (Table);
316             Status = AE_NO_MEMORY;
317             goto Exit;
318         }
319 
320         TableDesc->Table = Table;
321         TableDesc->Next = NULL;
322 
323         /* Link at the end of the local table list */
324 
325         if (!ListHead)
326         {
327             ListHead = TableDesc;
328             ListTail = TableDesc;
329         }
330         else
331         {
332             ListTail->Next = TableDesc;
333             ListTail = TableDesc;
334         }
335     }
336 
337     /* Add the local table list to the end of the global list */
338 
339     if (*ReturnListHead)
340     {
341         ListTail = *ReturnListHead;
342         while (ListTail->Next)
343         {
344             ListTail = ListTail->Next;
345         }
346 
347         ListTail->Next = ListHead;
348     }
349     else
350     {
351         *ReturnListHead = ListHead;
352     }
353 
354 Exit:
355     fclose(File);
356     return (Status);
357 }
358 
359 
360 /*******************************************************************************
361  *
362  * FUNCTION:    AcGetOneTableFromFile
363  *
364  * PARAMETERS:  Filename            - File where table is located
365  *              File                - Open FILE pointer to Filename
366  *              GetOnlyAmlTables    - TRUE if the tables must be AML tables.
367  *              ReturnTable         - Where a pointer to the table is returned
368  *
369  * RETURN:      Status
370  *
371  * DESCRIPTION: Read the next ACPI table from a file. Implements support
372  *              for multiple tables within a single file. File must already
373  *              be open.
374  *
375  * Note: Loading an RSDP is not supported.
376  *
377  ******************************************************************************/
378 
379 static ACPI_STATUS
380 AcGetOneTableFromFile (
381     char                    *Filename,
382     FILE                    *File,
383     UINT8                   GetOnlyAmlTables,
384     ACPI_TABLE_HEADER       **ReturnTable)
385 {
386     ACPI_STATUS             Status = AE_OK;
387     ACPI_TABLE_HEADER       TableHeader;
388     ACPI_TABLE_HEADER       *Table;
389     INT32                   Count;
390     long                    TableOffset;
391 
392 
393     *ReturnTable = NULL;
394 
395     /* Get the table header to examine signature and length */
396 
397     TableOffset = ftell (File);
398     Count = fread (&TableHeader, 1, sizeof (ACPI_TABLE_HEADER), File);
399     if (Count != sizeof (ACPI_TABLE_HEADER))
400     {
401         return (AE_CTRL_TERMINATE);
402     }
403 
404     if (GetOnlyAmlTables)
405     {
406         /* Validate the table signature/header (limited ASCII chars) */
407 
408         Status = AcValidateTableHeader (File, TableOffset);
409         if (ACPI_FAILURE (Status))
410         {
411             return (Status);
412         }
413 
414         /*
415          * Table must be an AML table (DSDT/SSDT).
416          * Used for iASL -e option only.
417          */
418         if (!AcpiUtIsAmlTable (&TableHeader))
419         {
420             fprintf (stderr,
421                 "    %s: Table [%4.4s] is not an AML table - ignoring\n",
422                 Filename, TableHeader.Signature);
423 
424             return (AE_TYPE);
425         }
426     }
427 
428     /* Allocate a buffer for the entire table */
429 
430     Table = AcpiOsAllocate ((ACPI_SIZE) TableHeader.Length);
431     if (!Table)
432     {
433         return (AE_NO_MEMORY);
434     }
435 
436     /* Read the entire ACPI table, including header */
437 
438     fseek (File, TableOffset, SEEK_SET);
439 
440     Count = fread (Table, 1, TableHeader.Length, File);
441 
442     /*
443      * Checks for data table headers happen later in the execution. Only verify
444      * for Aml tables at this point in the code.
445      */
446     if (GetOnlyAmlTables && Count != (INT32) TableHeader.Length)
447     {
448         Status = AE_ERROR;
449         goto ErrorExit;
450     }
451 
452     /* Validate the checksum (just issue a warning) */
453 
454     Status = AcpiTbVerifyChecksum (Table, TableHeader.Length);
455     if (ACPI_FAILURE (Status))
456     {
457         Status = AcCheckTextModeCorruption (Table);
458         if (ACPI_FAILURE (Status))
459         {
460             goto ErrorExit;
461         }
462     }
463 
464     *ReturnTable = Table;
465     return (AE_OK);
466 
467 
468 ErrorExit:
469     AcpiOsFree (Table);
470     return (Status);
471 }
472 
473 
474 /*******************************************************************************
475  *
476  * FUNCTION:    AcIsFileBinary
477  *
478  * PARAMETERS:  File                - Open input file
479  *
480  * RETURN:      TRUE if file appears to be binary
481  *
482  * DESCRIPTION: Scan a file for any non-ASCII bytes.
483  *
484  * Note: Maintains current file position.
485  *
486  ******************************************************************************/
487 
488 BOOLEAN
489 AcIsFileBinary (
490     FILE                    *File)
491 {
492     UINT8                   Byte;
493     BOOLEAN                 IsBinary = FALSE;
494     long                    FileOffset;
495 
496 
497     /* Scan entire file for any non-ASCII bytes */
498 
499     FileOffset = ftell (File);
500     while (fread (&Byte, 1, 1, File) == 1)
501     {
502         if (!isprint (Byte) && !isspace (Byte))
503         {
504             IsBinary = TRUE;
505             goto Exit;
506         }
507     }
508 
509 Exit:
510     fseek (File, FileOffset, SEEK_SET);
511     return (IsBinary);
512 }
513 
514 
515 /*******************************************************************************
516  *
517  * FUNCTION:    AcValidateTableHeader
518  *
519  * PARAMETERS:  File                - Open input file
520  *
521  * RETURN:      Status
522  *
523  * DESCRIPTION: Determine if a file seems to contain one or more binary ACPI
524  *              tables, via the
525  *              following checks on what would be the table header:
526  *              1) File must be at least as long as an ACPI_TABLE_HEADER
527  *              2) There must be enough room in the file to hold entire table
528  *              3) Signature, OemId, OemTableId, AslCompilerId must be ASCII
529  *
530  * Note: There can be multiple definition blocks per file, so we cannot
531  * expect/compare the file size to be equal to the table length. 12/2015.
532  *
533  * Note: Maintains current file position.
534  *
535  ******************************************************************************/
536 
537 ACPI_STATUS
538 AcValidateTableHeader (
539     FILE                    *File,
540     long                    TableOffset)
541 {
542     ACPI_TABLE_HEADER       TableHeader;
543     ACPI_SIZE               Actual;
544     long                    OriginalOffset;
545     UINT32                  FileSize;
546     UINT32                  i;
547 
548 
549     ACPI_FUNCTION_TRACE (AcValidateTableHeader);
550 
551 
552     /* Read a potential table header */
553 
554     OriginalOffset = ftell (File);
555     fseek (File, TableOffset, SEEK_SET);
556 
557     Actual = fread (&TableHeader, 1, sizeof (ACPI_TABLE_HEADER), File);
558     fseek (File, OriginalOffset, SEEK_SET);
559 
560     if (Actual < sizeof (ACPI_TABLE_HEADER))
561     {
562         return (AE_ERROR);
563     }
564 
565     /* Validate the signature (limited ASCII chars) */
566 
567     if (!AcpiUtValidNameseg (TableHeader.Signature))
568     {
569         return (AE_BAD_SIGNATURE);
570     }
571 
572     /* Validate table length against bytes remaining in the file */
573 
574     FileSize = CmGetFileSize (File);
575     if (TableHeader.Length > (UINT32) (FileSize - TableOffset))
576     {
577         fprintf (stderr, "Table [%4.4s] is too long for file - "
578             "needs: 0x%.2X, remaining in file: 0x%.2X\n",
579             TableHeader.Signature, TableHeader.Length,
580             (UINT32) (FileSize - TableOffset));
581         return (AE_BAD_HEADER);
582     }
583 
584     /*
585      * These fields must be ASCII: OemId, OemTableId, AslCompilerId.
586      * We allow a NULL terminator in OemId and OemTableId.
587      */
588     for (i = 0; i < ACPI_NAMESEG_SIZE; i++)
589     {
590         if (!ACPI_IS_ASCII ((UINT8) TableHeader.AslCompilerId[i]))
591         {
592             goto BadCharacters;
593         }
594     }
595 
596     for (i = 0; (i < ACPI_OEM_ID_SIZE) && (TableHeader.OemId[i]); i++)
597     {
598         if (!ACPI_IS_ASCII ((UINT8) TableHeader.OemId[i]))
599         {
600             goto BadCharacters;
601         }
602     }
603 
604     for (i = 0; (i < ACPI_OEM_TABLE_ID_SIZE) && (TableHeader.OemTableId[i]); i++)
605     {
606         if (!ACPI_IS_ASCII ((UINT8) TableHeader.OemTableId[i]))
607         {
608             goto BadCharacters;
609         }
610     }
611 
612     return (AE_OK);
613 
614 
615 BadCharacters:
616 
617     ACPI_WARNING ((AE_INFO,
618         "Table header for [%4.4s] has invalid ASCII character(s)",
619         TableHeader.Signature));
620     return (AE_OK);
621 }
622 
623 
624 /*******************************************************************************
625  *
626  * FUNCTION:    AcCheckTextModeCorruption
627  *
628  * PARAMETERS:  Table           - Table buffer starting with table header
629  *
630  * RETURN:      Status
631  *
632  * DESCRIPTION: Check table for text mode file corruption where all linefeed
633  *              characters (LF) have been replaced by carriage return linefeed
634  *              pairs (CR/LF).
635  *
636  ******************************************************************************/
637 
638 static ACPI_STATUS
639 AcCheckTextModeCorruption (
640     ACPI_TABLE_HEADER       *Table)
641 {
642     UINT32                  i;
643     UINT32                  Pairs = 0;
644     UINT8                   *Buffer = ACPI_CAST_PTR (UINT8, Table);
645 
646 
647     /* Scan entire table to determine if each LF has been prefixed with a CR */
648 
649     for (i = 1; i < Table->Length; i++)
650     {
651         if (Buffer[i] == 0x0A)
652         {
653             if (Buffer[i - 1] != 0x0D)
654             {
655                 /* The LF does not have a preceding CR, table not corrupted */
656 
657                 return (AE_OK);
658             }
659             else
660             {
661                 /* Found a CR/LF pair */
662 
663                 Pairs++;
664             }
665 
666             i++;
667         }
668     }
669 
670     if (!Pairs)
671     {
672         return (AE_OK);
673     }
674 
675     /*
676      * Entire table scanned, each CR is part of a CR/LF pair --
677      * meaning that the table was treated as a text file somewhere.
678      *
679      * NOTE: We can't "fix" the table, because any existing CR/LF pairs in the
680      * original table are left untouched by the text conversion process --
681      * meaning that we cannot simply replace CR/LF pairs with LFs.
682      */
683     AcpiOsPrintf ("Table has been corrupted by text mode conversion\n");
684     AcpiOsPrintf ("All LFs (%u) were changed to CR/LF pairs\n", Pairs);
685     AcpiOsPrintf ("Table cannot be repaired!\n");
686 
687     return (AE_BAD_VALUE);
688 }
689